Automatic lung, for pressurized air respiration device, has blocking lever for securing membrane in operating pause provided with safety restraint preventing release by mechanical shock

摘要

The invention relates to an automatic-lung regulator for compressed-air respiration apparatus, comprising a diaphragm (2) that can be actuated by respiration for controlling the air supply. Said regulator has a fixing moulded body (5) on a locking lever (1) for locking the diaphragm in an operating phase, said body being maintained in a release or locking position by a first spring element (4). A second spring element (10), which can be displaced in a longitudinal direction in a limited manner, acts as a safety fixing element in order to reinforce the locking action of the locking lever, when the automatic-lung regulator is subjected to external mechanical influences.